An insider said, “This is the largest defection in recent memory, and such a defection from CAA is highly unusual, it being the once-dominant talent agency. UTA has a very strong comedy division, which would have been very attractive to the agents. What is amazing is how they kept this so quiet.”

CAA was yesterday battling to keep its top clients from following their agents out the door to UTA, as Pratt announced he’s doing.

Deadline also reported that, on the heels of the comic agents’ defections, three more CAA agents — John Sacks and Susie Fox, who represent talent across film and TV, and Joanna Scott, who works in touring — had also joined UTA.